docs: def getdatastrs(self):
          """Retrieve the dataset standard string attributes.
  
          Args::
  
            no argument
  
          Returns::
  
            4-element tuple holding:
  
            - dataset label string (attribute 'long_name')
            - dataset unit (attribute 'units')
            - dataset output format (attribute 'format')
            - dataset coordinate system (attribute 'coordsys')
  
          The values returned by 'getdatastrs' are part of the
          so-called "standard" SDS attributes.  Those 4 values
          correspond respectively to the following attributes::
  
            long_name, units, format, coordsys .
  
          C library equivalent: SDgetdatastrs
                                                         """
  
          status, label, unit, format, coord_system = \
                 _C.SDgetdatastrs(self._id, 128)
          _checkErr('getdatastrs', status, 'cannot execute')
          return label, unit, format, coord_system